ISO Fit Tolerance Calculator (ISO 286)
Calculates hole and shaft tolerances and fit type based on ISO 286-1:2010.
How to Calculate ISO Fit Tolerances
- Enter the nominal diameter in mm.
- Select the fundamental deviation (e.g. H, g) and IT grade (e.g. 7, 6) for hole and shaft.
- Tolerances and maximum/minimum clearance or interference are calculated automatically.
- Use the preset buttons to quickly select common fit combinations.
mm
1–3150 mm
Fundamental deviation + IT grade (e.g. H7)
Fundamental deviation + IT grade (e.g. g6)
Common fits:
Result
Fit Type
—
- Hole Upper Deviation ES
- — mm
- Hole Lower Deviation EI
- — mm
- Shaft Upper Deviation es
- — mm
- Shaft Lower Deviation ei
- — mm
- Maximum Clearance
- — mm
- Minimum Clearance
- — mm
